Rubber stamps



July 22, 1958 w. K. MuNsoN Y 2,844,097

RUBBER STAMPS Filed Feb. 21, 1956 2l (9 Via 2| INVENTOR. WHITNEY K. MuNsoN ATTORNEY United kStates Patent O RUBBER STAMPS Whitney K. Munson, Red Bank, N. J. Application February 21, 1956, Serial No. 566,799 7 Claims. (Cl. 101-380) i This invention relates to what are generally known as rubber stamps for use in applying imprints upon any type and -kind of device or article. More particularly, the invention deals with a stamp of the character described,

employing means for assembling type characters and for quickly and easily mounting an assemblage of type and other characters on a support and retaining the same on the support in a manner which will facilitate detachment of the type characters for changing or revising the stamp from time to time. v

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference charatcers in each of the views and, in which:

Fig. 1 is a plan view of a simple form of stamp, with part of the construction broken away and in section;

' Fig. 2 is a section on the broken line 2--2 of Fig. l, illustrating one type of stamp structure; and Fig. 3 is a partial section on the line 3-3 of Fig. l.

use where rubber type is utilized in forming a stamping or printing medium, vI have illustrated my invention as applied to what are known as hand stamps employing a wood, plastic or other block or body 10, Vas seen in Fig. 2, having, extended fromone surface thereof, a conventional handle member 11, which is only shown in part in said figure.

Secured to the upper surface 12 of the block 10 is a type mounting and backing strip 13, which can be formed of any desired material, but which is preferably a moulded strip of rubber or other yieldable material, moulded to form a plurality of longitudinal channels 14, only two of which are shown in the present construction in order to simplify the illustration. It will be apparent that, in some types of stamps, a greater number of the channels 14 will be provided.

It is also pointed out, at this time, that stamps of the type and kind under consideration can be in the form of` kits, wherein strips 13 of any desired number of channels can be included and these strips can be long and cut to predetermined stamp lengths consistent with lengths of standard blocks 10, which are in common use.

The cross-sectional form of the backing strip 13 provides longitudinal ribs 15 which, in the simple form of construction shown, define end ribs and an intermediate rib.

Arranged in the channels 14 are rubber stamp blocks in the form of type blocks 16 and spacer blocks 17, the type blocks including characters which protrude above the surfaces of the spacer blocks 17, as will be apparent. These blocks are apertured at the lower portion thereof,

While my improved stamp structure is adapted for any as seen at 18, in Figs. 2 and 3 of the drawing, the apertures being formed in the process of moulding the several blocks.

In the use of the stamp, type blocks 16, as well as spacer blocks 17 are collected from a source of supply which may constitute the kit, above referred to, and

these characters are then threaded upon supporting rods 19 of metal or plastics, the rods having suicient rigidity to maintain the blocks 16 and 17 in rm position within the channels 14 of the backing strip 13. The kit may have rods cut to predetermined standardized lengths and rods will be selected to suit the particular block 10, so that end portions 20 of the rodsfwill protrude beyond the ends of the block 10, as clearly noted in Figs. 1 and 3 of the drawing. Adhesively or otherwise secured to the end faces of the block 10 are rubber or other yieldable coupling or mounting members 21, said members having, on inner opposed surfaces thereof, apertures 22 to receive the protruding ends 20 of the rods 19 in definitely and yieldably retaining the rods in position to support the blocks 16 and 17 snugly in the channels 14 while, at the same time, permitting the rods to yield in the operation of the stamp pressure applied upon the surface being printed. In this connection, it will be understood that not only the blocks 16, 17 but thebacking 13 yield to this pressure. Accordingly, the ends 20 of the rods will yield in the yieldable supporting strips 21.'

It will be noted, from a consideration of Fig. 3 of the drawing, that the'upper, bevelled end portions 23 of the strips 21 are unattached, ythus facilitating outward exure of these ends for the purpose of coupling the type units with the strip 13, as well as in detaching the units therefrom, whenever it is desired to change or modify the stamp by changing the characters of the various type resenting the few type characters 16 employed, were to g be constructed, a stamp body or block 10 of much shorter length would be used. Further,l if agreater Vnumber of 10 will be of greater lines are required, then the body width.

l With my improved construction, itwill be understood' that the rods 19 operate to' maintainthe type `characters j or blocks 16 in longitudinal alinement throughout/the use thereof, thus insuring a substantially perfect reproduc`" tion of the type characters in the use of the stamp.

With stamps of the type and kind under consideration,

the type or characterized-blocks, such as 16, c an be made in different type or .other sizes, depending upon the printing stamp to be produced. In all instances, the

size of the blocks 1.6 Awill be consistent with the` size yof the type and the backing member'I 13wvill have channel or Vsulvaporting grooves,k comparable to the size ofthe blo'cks'16 which are employed. In this connection,` it will be'understood that the backing 13 may`jhave wide and narrow channels'onithe same strip and these strips will befabricatedto suit different standardized, as well asspe'cial uses lor arrangements. In all-instances, the back-"17 ing strip is Xedly secured adhesively or otherwise to the surface of the block or supporting body 10.

.Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A rubber hand stamp of the character described, comprising a supporting body having a at outer surface, a yieldable channelled backing secured to the flat suryface of said body with the channel directed outwardly with respect to said flat surface, a plurality of characterized and blank rubber blocks arranged as an assemblage in the channelled portion of said backing, said blocks having alined apertures arranged wholly within boundaries of the blocks and positioned within the channel of said backing, a straight rod disposed snugly in the apertures of said blocks in alining the blocks one with respect to the other as an assemblage for mounting with- 'Patented July 22, 1958 2,844,097 Y V Y e in the channelled Iportion of completely enveloped by each of said blocks and, having ends protruding beyond endl blocks disposed on the rod to form mounting ends, andv means secured to said supporting body and arrangedover'the ends of the channelled. portion of said backing for engaging the mounting ends of said rods in retaining the assemblage of blocks onthe rod 'against' displacement from said backing.

2. A rubber hand stamp of the character described, comprising a supporting body having a flat outer surface, a yieldable channelled backing secured to the at surface of said body: with the channel directed outwardly with respect to said flat surface, a plurality of characterized and blank rubberblocks arranged as an assemblage in the :channelled portion of said backing, said blocks.

having alined apertures arranged wholly within boundaries of the blocks and positioned within the channel ofy said backing, a straight rod disposed snugly in the apertures of said blocks in alining the blocks one with respect to the other as an assemblage for mounting within the channelled portion of said backing, said rod being completely enveloped by each of said blocks and having ends protruding beyond end blocks disposed on the rod to form mounting ends, means secured to said supporting body and arranged over the ends of the channelled portion of said backing for engaging the mounting ends of said rods in retaining the assemblage of blocks on the rod against displacement from said backing, said last named means having apertures vfor receiving the mounting ends ofV said rod, and said last named means being yieldable for yieldable support of the rod.

3. A rubber hand stamp of the character described, comprising a plurality of yieldable rubber blocks having integral characterized surfaces, said blocks having alined apertures extending therethrough and spaced from outer edges of said blocks, said blocks being arranged upon a mounting rod` by threading the rod through the alined apertures of the blocks in mounting the blocks in a predetermined arrangement on the rod, blank spacer blocks being also arranged on the rod, the arrangement of the blocks on the rod forming a block unitleaving protruding `mounting rod ends beyond end blocks of the unit, a rigid supporting body, a yieldable backing on said body, and means, on end portions of said body, detachably engaging the mounting ends of said rod in retaining the unit against displacement from said body and with the blocks in iirm engagement with said yieldable backing.

4. A rubber hand stamp of ,the character described, comprising a plurality of yieldable rubber blocks having integral characterized surfaces, said blocks having alined apertures extending therethrough and spaced from outer edges of said blocks, said blocks being arranged upon amounting rod by threading the rod through the alined aperturesof the blocks in mounting the blocks in a predetermined arrangement on the rod, blank spacer blocks being also arranged on the rod, the arrangement of the blocks on the rod forming a block unit leaving protruding mounting rod ends beyond end blocks of the unit, a rigid supporting body, a yieldable backing on said body, means,

said backing, said rod being 'Y on end portions of said body, detachably engaging `the mounting ends, of said rod in retaining the unit against displacement from said body and with the blocks in firm engagement with said yieldable backing, and said yieldable backing being channelled to receive said unit.

5. A rubber hand stamp of the character described, comprising a plurality of yieldable rubber blocks having integral characterized surfaces, said blocks having alined apertures extending therethrough and spaced from outer edges of said blocks, said blocks being arranged upon a mounting rod by threading the rod through the alined apertures of the blocks in mounting the blocks in a predetermined arrangement on the rod, blank spacer blocks being also arranged on the rod, the arrangement of the blocks on the rod forming a block unit leaving protruding mounting rod ends beyond end blocks of the unit, a rigid supporting body, a yieldable backing on said body, means, on end portions of said body, detachably engaging the mounting ends of said rod in retaining the unit against displacement from said body and with the blocks in firm engagement with said yieldable backing, and said means being yieldable to compensate for yielding movement of the unit in the use of the stamp.

6. In hand stamps of the character described employing a rigid supporting body having a flat outer surface and a yieldable backing xed to the outer surface of said body and couplings at opposed end portions of said body, a characterized stamp unit comprising a straight rod, a plurality of characterized and spacing rubber blocks threaded and alined on the rod and completely enveloping the rod, leaving protruding rod 'coupling ends beyond end` blocks of the unit, and said unit being attachable to said backing by detachable engagement of the rod ends with said end couplings in constructing, or the supporting body, a rubber stamp unit having predetermined stamping characteristics.

7. A hand stamp of the character described, comprising a supporting body having a at outer surface, a yieldable backing secured to the outer surface of said body, a plurality of characterized units, each comprising a straight rigid. rod having a plurality of yieldable rubber blocks mounted thereon, said blocks having integral characterized outer surfaces, coupling ends on the rods at end limits of the units, all of said blocks completely enveloping the rods, opposed ends of said body having apertured couplings adapted to detachably receive the coupling ends of the rods of each unit in detachably securing the units upon said backing, and inner surfaces of the blocks of said units engaging said yieldable backing.

References Cited in the le of this patent UNITED STATES PATENTS 521,287 Ingersoll `lune l2, 1894 772,337 Brown Oct. 18, 1904 893,977 Brown July 2l, 1908 1,284,932 Russell etal Nov. 12, 1918 1,750,004 Hellesoe Mar. 11, 1930 2,030,044 Beghetti Feb. l1, 1936 2,190,740 Swift Feb. 20. 1940 

